Template-Assisted Scalable Nanowire Networks

Anna Fontcuberta i Morral
École Polytechnique Fédérale de Lausanne, Switzerland

Topological qubits based on Majorana Fermions have been considered in the emerging field of quantum computing. They are supposed to render information processing significantly more robust to decoherence. Nanowires are a promising medium for hosting states and achieving branched nanowire structures is certainly a requisite to allow for qubit manipulations. We will report novel and scalable method to obtain networked III-V nanowires on a chip. Our approach is based preferential incorporation of InAs on top of defect-free GaAs nanomembranes yielding laterally oriented, low-defect InAs and In(Ga)As horizontally positioned nanowires. Our electronic transport measurements are consistent with phase-coherent, quasi-1D quantum transport as shown by magnetoconductance measurements.

Reference: M. Friedl et al. Nano Lett. (2018)
external page DOI:10.1021/acs.nanolett.8b00554